Dartlero tasks – a many-to-many model in MySQL

A one-table project is quite unrealistic; let us now revisit the dartlero_project_tasks application in Chapter 8, Developing Business Applications with Polymer Web Components. This has a many-to-many relationship between the concepts Project and Employee, Task being the intermediate concept; data is stored only in the browser's local storage. In the dartlero_tasks project (code can be cloned from https://github.com/dzenanr/dartlero_tasks), we have the same model built on Dartlero, but the data can be stored on the server either in the JSON format or in a MySQL database. The startup script for both the options is bin/dartlero_tasks.dart. The model and the data access layer are defined in library dartlero_tasks lib/model/darlero_tasks.dart.

The JSON storage

If you want to use the JSON file storage, you have to create a command-line launch for the bin/dartlero_tasks.dart script. In Run | Manage Launches of Dart Editor, enter two script...